Is CVE-2026-44566 actively exploited?

No active exploitation of CVE-2026-44566 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-44566 be exploited remotely?

Yes. CVE-2026-44566 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-44566?

CVE-2026-44566 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2026-44566

CWE-22Published: May 15, 2026· Updated: May 19, 2026

9.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.1th

Official Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.

NVD Source

Technical Analysis

CVE-2026-44566 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.